World Oil Demand

According to the International Energy Agency, demand for oil will increase at a greater than anticipated rate:

"...the International Energy Agency, which is based in Paris and advises 26 industrial nations, said that global oil demand would rise by an average of 2.2 percent a year from this year to 2012, up from a forecast in February of 2 percent annual growth from 2006 to 2011."

"The share of world oil consumption represented by the developing world, including emerging industrial economies, will rise to 46 percent of global demand by 2012 from 42 percent, the report said."

Given this information, it's a safe bet that oil companies heavily invested in the exploration and production of oil (upstream operations) will benefit greatly over the next five years. Chevron and Exxon-Mobil to name a few. It's also a safe bet to assume that developing countries could see nice runs in their stock markets. The Argentinian MerVal stock index could be in line to see nice returns. The Bovespa index in Brazil has already seen some solid gains and the Hang-Seng index in China has been going berserk; others may follow. All of this, of course, is contingent on whether or not the world enters an economic recession.
No recommendations for now - I'll update these companies and indexes when I can be more sure about where we are in the economic cycle.